WebP 可以保留透明背景，因此带有 alpha 的 PNG 并非必然要保留为 PNG。更安全的做法是转换一份副本，在明亮与黑暗背景上预览边缘，并在替换原始文件之前比较最终文件大小。
使用 PNG to WebP Converter 进行浏览器端转换。当浏览器导出 WebP 副本时，您的文件会保留在您的设备上。
可靠的工作流程
- 从您拥有的最大且干净的 PNG 源文件开始。
- 以适中的质量设置（例如 82%）转换为 WebP。
- 在棋盘格、明亮背景和黑暗背景上预览 WebP。
- 与原始 PNG 比较文件大小。
- 保留 PNG 源文件以便编辑，并在 WebP 更小且视觉干净时发布。
需要检查的内容
仔细观察半透明阴影、抗锯齿文字、圆角标志边缘和微小图标。这些区域会比图像其余部分更早出现导出问题。
PNG 可能仍然更好的情况
PNG 对于非常小的图标、简单的扁平图稿，或需要无损编辑的工作流可能更好。WebP 通常在较大的图形、截图和图片繁多的页面中占优。
常见问题
WebP 可以有透明背景吗？
可以。WebP 支持 alpha 透明度，但您应在转换后预览边缘与阴影。
标志是否总是应该从 PNG 转换为 WebP？
不一定。请先测试文件大小和视觉质量，尤其是小型扁平标志。
Resources
参考资料
利用这些参考资料，在指南、对应的支持页面与内容创作者之间切换。
Convert between JPG, PNG, and WebP formats in your browser.
打开工具PNG to WebP ConverterConvert PNG images to smaller WebP files in your browser.
打开工具WebP to PNG ConverterTurn WebP files into PNG images when an upload form needs PNG.
打开工具PNG vs WebP vs AVIF：该用哪种图片格式？针对网站图片、透明背景、屏幕截图、照片与浏览器支持，实用比较 PNG、WebP 与 AVIF。
阅读指南什么是 WebP？什么时候应该使用它？以初学者友好的方式解释 WebP，介绍它适用的场景，以及 PNG 或 JPG 何时仍是更好的格式。
阅读指南Leon PatelCreates how-to guides and photo tips that keep the advice simple, clear, and ready to use in Gift Studio.
查看作者Dylan RossChecks guides and photo tips for freshness, usefulness, and a calm editorial voice.
查看审核者打开 Gift StudioApply the guide in the editor when you are ready to make the gift.
制作礼物See how the article was reviewed, then use the buttons below if something needs attention.
Editorial policyTopic graph
Keep exploring 如何在不丢失透明度的情况下将 PNG 转换为 WebP
Follow the connected pages below to move from this topic into the closest guides, messages, examples, decoration guides, recipient guides, occasions, and memory guides.
Related Guides
Use these how-to pages when you need the next practical step.
Resize, crop, compress, and convert photos so they are ready for the gift workflow.
Read guideBest phone photos for giftsLearn how to choose phone photos that still look polished in a personalized gift, plus what to avoid before you design the keepsake.
Read tipBest photos for photo giftsLearn which photos work best for personalized photo gifts, what to avoid, and how to choose an image that still feels meaningful later.
Read tipRelated Messages
Use these message pages when the wording needs to match the tone.
Browse 100+ anniversary gift message examples for warm, simple, emotional, romantic, and long-distance photo gifts.
Browse messagesBirthday gift messages that sound warm and personalBrowse 100+ birthday gift message examples for warm, simple, emotional, playful, and long-distance photo gifts.
Browse messagesChristmas gift messages that feel warm and seasonalBrowse 100+ Christmas gift message examples for warm, simple, emotional, funny, and formal photo gifts.
Browse messagesRelated Examples
Compare finished examples to check the direction before you decide.
Birthday example cards showing how one photo becomes a playful keepsake with a clear celebration tone.
Open examplesChristmasChristmas example cards showing how one photo becomes a seasonal keepsake with a calm holiday finish.
Open examplesCongratulationsCongratulations example cards showing how one photo becomes a milestone keepsake with a polished finish.
Open examplesRelated Decoration Guides
Choose the style direction that supports the photo and message.
Cherry blossom decorations feel delicate, seasonal, and hopeful, with a spring mood that works well for fresh beginnings.
Read guideChristmasChristmas decorations add seasonal warmth, family energy, and a cozy winter mood to holiday keepsakes.
Read guideDecoration GuidesCompare decoration styles and frames that support the photo instead of fighting it.
Read guideRelated Recipient Guides
Match the gift to the person or relationship first.
Related Memory Guides
Keep the archive, timeline, or legacy context clear.
Related Articles
Read the latest articles for deeper context on this topic.
Explore 50 meaningful personalized gift ideas for birthdays, anniversaries, memorials, weddings, holidays, and everyday moments of appreciation.
Read articleBest Birthday Gift Ideas for Family and FriendsDiscover thoughtful birthday gift ideas for family and friends, including personalized photo gifts, custom keepsakes, and last-minute digital gifts.
Read articleHow Personalized Gifts Strengthen RelationshipsLearn why personalized gifts build stronger relationships by showing attention, preserving memories, and turning shared moments into lasting keepsakes.
Read articleRelated Tools
Use these free browser tools to prepare, edit, or convert your images.
Convert PNG images to smaller WebP files in your browser while keeping transparency when the browser encoder supports it.
Open toolWebP to PNG ConverterConvert WebP files back to PNG for upload forms, editing tools, and workflows that do not accept WebP.
Open toolJPG to WebP ConverterConvert JPG photos to smaller WebP images in your browser. Free, private, and local for supported files.
Open tool